Glu-urea-Glu-NHS ester (compound 21) is an activated N-droxysuccinamide (NHS) ester of Glu-urea-Glu which can be used as a pharmacophore for linking with prostate specific membrane antigen (PSMA) inhibitors.
References:
[1]. Lu G, et al. Synthesis and SAR of ⁹⁹mTc/Re-labeled small molecule prostate specific membrane antigen inhibitors with novel polar chelates. Bioorg Med Chem Lett. 2013 Mar 1;23(5):1557-63.
















